Pilot Valve Moves About An Axis Patents (Class 91/310)
  • Patent number: 5020974
    Abstract: A fluid compressor includes a plurality of compression stages each operated sequentially by drive means comprising a pneumatically operated drive piston operating in a drive cylinder. Several embodiments are described and illustrated having different forms of control means and drive and sequencing means for the drive pistons.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: June 4, 1991
    Assignee: Normalair-Garrett (Holdings) Limited
    Inventor: Robin H. J. Searle
  • Patent number: 4507918
    Abstract: A compressed fluid reciprocating piston engine provides for cylinders radially disposed about a crankshaft and coupled thereto by means of piston rods engaging a disc rotatable with the crankshaft. Exhaust fluid feedback is merged into higher pressure fuel at a venturi throat section in the fuel conveyance line where the pressures are temporarily substantially equalized. A timer distributor mechanism consists of a disc rotatable by a shaft as journalled between two outer panels thereby with a rotating aperture hole to provide pressurized fluid through a scanned sequence of outlet lines serving to operate fluid input valves coupling a fluid pressure source selectively to power the reciprocating pistons.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: April 2, 1985
    Inventor: John E. Holleyman
  • Patent number: 4084487
    Abstract: A non-impacting nut running pneumatic tool in which torque pulses are transmitted by an oscillating air motor through a one-way clutch and reduction gearing to the work. A torque responsive cam clutch member responds to a predetermined delivered torque to cause stalling of the motor by blocking off escape of exhaust air and to cause discontinuance of further torque transmission to the work by disabling the drive connection. Manually operable adjusting means is provided to regulate the value of torque delivered.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: April 18, 1978
    Assignee: Chicago Pneumatic Tool Company
    Inventor: William K. Wallace